I dont know about switching to synthetic, especially with it not being too fresh of an engine. I started using mobil 1 in my SHO (which probably had dino oil its whole life - 150K) and wow, leak galore. I'd stick with a good dino oil and change it often. Synthetic will wash the engine too well and remove some of the crud holding your seals up. I learned this lesson the hard way
Switched the oil to Castrol GTX - engine is much smoother and I'm not so worried about leaking like crazy.
Then again I ran mobil 1 in my Mystique from 80-100K with no problems.
Other then what you mentioned I would clean and balance the injectors and grease up anything that will take it.
