Yegorm

So i recently purchased a 2007 es350 and ive only done cosmetic mods to it so far. I want to start doing some performance mods now. I read that a putting in a short ram intake (dragon intake by weapon-r) is a good one. Also should i do a muffler and resonator delete? Or just a muffler or not at all? I read that an is250 owner did a muffler delete and lost a lot of low end torque. Is that cuz its an inline 4? Any thoughts? Thanks. (Low budget college student)