Not sure your price range, but any sliding top will make things go smoothly. I've used everything from high end sliding chop saw type wet saws, to sliding tables, to cheap plastic fixed blade/fixed table wet saws.
If you can get a sliding table top with miter slide attachments, get it, it helps with all sorts of funky cuts. Don't forget a good pair of tile chippers too. I'm not brand loyal, so considering this isn't your full time job, any cheaper brand will be just fine. Grab an extra blade, and see if you can find one that when dull, you can reverse the rotation of the blade and keep cutting.
Make sure you lay out your tile dry, use a framing square, 4 foot level, and chalk line. A good solid 4 foot level also helps when laying the tile, to set the tile flush with surrounding tile, and pressing it down evenly if needed.
You'll be fine, it's really not hard at all. Pay attention or ask questions about the thinset you buy, theres thinset for ceramic tile/marble/rapid set. Avoid the rapid set

And have a couple extra sponges, if you're sloppy with the grout, you'll be wiping forever, and wipe on the diagonal. And a drill paddle is needed to mix the thinset/grout. The dinky paint ones will work... but it's a PITA. Though, if you fear your drill might not like the extra torque load, don't get the bigger mixing paddle. I mean of course you can mix it by hand, but who wants to do that
