For steering servo it's hard to beat the savox 1268's they don't break the bank and they perform great. My favorite servo is the KO rsx line. They are definatly at the top but they do stress the bank a little.

For fluids I started with the same as I run inthe nitro buggy 40 front and 30 rear with 5-5-4. After running the car I would bump the center fluid up to at least 7 as the front just unloads and turns the front tires into pizza cutters immediately when you pull the trigger hard. So prob 5-7-3 and 40/30 in the shocks with 1.3 pistons and maybe go up to 5-10-3 if the front still unloads.