yeah man... just leave the bottom end alone until you have the money to do it all at once... because you will end up just double working yourself... plus you will have to balance the bottom end for the pistons and then go back and re-balance it after you get the rods.... but yes, it is ok to drive the car without boost with forged internals, in fact I would recommend it during the break-in period and then put on the boost and switch to synthetic oil afterwards... I would just get the money up for the turbo kit, put that on and run that on stock internals until you get tired of it and then save up the money and build the bottom end when you can... but just don't start putting parts on the car until you have everything for what you are doing....