Which direction to go with build?

I have a 69 Dart that I am installing floor pans and patching the crossmember. While the pans were out I thought what better time to install a overdrive trans. I was thinking A518 (non lockup two wire). I found a donor trans from a 1 ton van that I think I could pick up for 100 bucks. I just installed a turbo action full manual valve body in my 727 last year and love it. Not sure which one I would like more though.
I also bought a set of 2 valve relief speed pro pistons that I wanted to install in place of the 4 valvers I am using now. At the same time I would ditch the stock rods for a set of Scat I beams with the hardened rod bolts.
I talked to my machinist and he has a set of ross forged pistons that a customer ordered and never used that he would sell me for cost. Zero deck the block and run it on E85. 11-1 or close to it.
I have also been reading up on turbo's. A single turbo would be cool but I would have to ditch the power steering. I could also run my 3.23 gears.

Option 1 speed pro pistons (allready payed for, Scat I beam rods,balance parts

Option 2 leave motor alone get A518 built to handle some abuse

Option 3 Ross pistons, Scat rods, Qiuck fuel E85 conversion, leave trans alone. (nitrous would be an option later)

Option 4 Turbo, manual steering box, leave tranny, Swap 3.91 gears for 3.23 (also own) Modify carb for blow through, upgrade fuel system from carter hi flow to electric.

Which direction and why. I would have 1000 to play with right away but after that 500 a month for the rest of the year.

At the track a few times a year. Live 24 miles from work. (usually borrow a trailer for any longer trips)