I have two DC engine that I can not convert to DCC (to old) what suggestion Can I get to go DCC. As for as power should i get the Bachmann 44932 with just 1 Amp and get a booster or is there a 5 amp Bachmann controller or should I get a booster. I also need suggestion and what to look for in buying DCC Equipped engines (i want to run 3). I have a 4x8 layout with 3 ovals (outer, middle and inner) I plan to expand my layout 

I want to have a three oval layout, should I use 15 inch radius for the inner oval and 22 inch radius for the outer oval