hmmm... no other unique cats like super rares and uber rares..? well if not it's ok (for a starting player - i've been out too long sorry)
ehem...so basically your main target at the moment is getting Eraser Cat, Macho Legs Cat, King Dragon Cat and Jameira Cat from the basic cat series. (yep they're really important, won't dissappoint in the long run)
Paris is good. If you have Viking Cat, I'd recommend saving for it's True Form it's too good to pass up really, will be good vs almost every mobs especially vs reds.
I'd recommend farming XP in early SoL, you could clear probably about all the early ones upto 10 maybe let's say upto 3 star level...then you can probably go do ITF until halfway over a little bit.