Can I Change the Rom for the second time?

[swegin]

Hello all-
I am completey new user to the android and yesterday I rooted my phone and replaced the ROM, due to the fact I wanted more freedom from the default ROM. However, I am noticing that the new ROM took away the incredible keyboard (which I liked), the HTC 4x4 calender agenda widget, and not to mention my battery is depleting quicker than before. So I want to find a better ROM..... However, can i keep replacing the ROM? or is this a bad idea? and if I do replace the ROM can i find one that has the stock HTC calender & Keyboard, or since it is no longer on my phone will I never be able to get them back?
So if I can replace the ROM again, does anyone have some recommendations for an Awesome ROM for the Incredible?

Thanks in advance,

Swegin