Save for a trans. or get one from a jy $2000 new or around $450 used

Clean the TB. I'd bet this will help or completely fix the stiff accelerator pedal issue. Free

1 quart between changes is considered normal loss by GM. Are your valve covers leaking yet? Could be dripping out there and gettinfg burnt off by the exhaust manifolds.

Get a front end alignment- $70

Not too bad if you ask me. I'd keep it. Even though you aren't mech. inclined you can still do simple things like removing/cleaning the TB and replace valve cover gaskets and grommets. We could help guide you through that easy enough.