Sadly in your childhood you had many misconceptions of Catholic teaching and lacked the proper formation to correct those errors.
Point by point:
Kneeling to someone makes them a God. - Says who? In the middle ages they knelt on the left knee to kings to signify their earthly lord and on the right to God to signify their true eternal Lord. That right these shows there are distinctions between forms on kneeling and makes you wrong.
Kneeling before a statue isn't even for the statue, is kneeing at your bedside worshiping your bed? C.S. Lewis (among millions of others) explains that we have corporal bodies that influence our spiritual state. By kneeling we are putting our bodies in a state that since childhood has made us mindful of the Lord and composes our spirit to communicate with Him. If we do at the alter, at our bedside or on a road side it has the same effect of engendering detachment from physical comforts and turning to find comfort in God.
Statues - Exodus 25:18 "And you shall make two cherubim of gold of hammered work shall you make them, on the two ends of the mercy seat. etc.." God ordered Moses to make them. The commandment is to not worship false idols, not to eliminate anything others might decide to call an idol. Do you have pictures of family are home, what if I decide that is worshiping them? Are you compelled to take them down because of my ignorance?
Praying to St. Christopher or Anthony - yes God will have a role for us in Heaven. And there is no scripture that says that role cannot be to intercede with Jesus or even have pass graces from Heaven to those on Earth by God's power. The power is not theirs of course the only thing any of us have that is ours is our sin. Everything else was given me by the Lord and truly belongs to Him, thus any action I ever do for another on Heaven or Earth is by His power.
The tabernacle: See John 6:52. The Eucharist was explained very clearly by Jesus. He ordered we celebrate His sacrifice in memory of Him (numerous times in scripture) and thus Catholic do.
Pray for the departed: Catholics know that you can't change your destination after death. That is also a very clear belief that even poorly informed Catholics understand. But Jesus did go somewhere to get those people that died before He's opened the gates of Heaven & it wasn't the eternal hell of sinners because as we both know that's an eternal destination. There is another temporary place that the chosen inhabited until Jesus raised them up. I'd explain the rest but I'm pressed for time - basically moral sin (a true rejection of God) merits Hell. A perfectly clean soul results in Heaven. A soul disposed toward God but falling into minor sins of the flesh need purification as by fine (referenced several time in scripture) before entering Heaven. So, as you say your candles don't changes ones eternity.
The Eucharist - stated above, Christ is crystal clear on this. The Eucharist is His body and blood. We are compelled to consume it by His own word, I'm amazed that any Bible Christian would ever begin to challenge that point. Also it isn't cannibalism - true essence of the Eucharist is Christ but cut it to pieces and all that is there is the matter or form of bread. Just as Jesus was God but if we'd put Him on a surgery table and cut Him to pieces we'd only find man.
Confession to a priest - The Apostles did it: 2 Cor 2:10 "If I have pardoned anything, I have done it in the person of Christ." 5:18 "All f this is from God, who through Christ reconciled us to himself and gave us the ministry of reconciliation" 5:20 "So we are ambassadors for Christ." The Apostles forgave sin by Christ passing His grace through them. They were a conduit of His power. They passed these gifts to the first Bishops and they have been passed down generation by generation until today in an unbroken chain from when Christ first game this gift to His Apostles.
The priesthood was done away with - No it wasn't. Jesus is the new high priest from then until eternity, but the high priest always had a cast of priest (the tribe of Benjamin I believe) that were to be an extension of the high priest to all the people. Catholic bishops and priests are the new tribe of Benjamin extending the High Priest's (Jesus') actions to all of His people.
If you have any other misunderstandings I'm glad to help clear things up. It is a shame so many people have such strong opposition to something the fundamentally do not understand.