As for 3 pedals, you want to do that atleast once in your life in a musclecar. Nothing like it and it adds to the fun of driving them.... I personally enjoyed inline shifters myself (Long/Vertigate) but am good without it now lol...
As for the brakes and cost, it was right at 900.00 for Hydroboost, Late Model MC, and adjustable proportioning valve. You want good brakes in your life so suck it up buttercup and eat Bologna sandwiches for a while lol....
Something else which you have made mention of is doing the work yourself. I will say this with a broad paintbrush but nothing compares to doing the work yourself. There willl always be cases where it just doesn't add up time and dollar wise but for many people including myself if someone does all the work for you then what fun is that lol... In fact, I may start a thread just to see what people say guys like you who are starting out in the hobby need.... It would be an interesting read lol...
JW