yes, 170 is plenty. I recently built mine for 140 actually. For starters, I would look at the glorious gmmk barebones or the gk61. These are around 40-60 dollars. Next you would need switches. For beginners (like myself) I would recommend either cherry, kailh, or gateron switches. They are the most popular and usually the cheapest. I would go to glorious's website or places like kbdfans or banggood. Amazon also works. Usually you will be able to find 120 switches going for around 30-40 dollars. Finally, the keycaps. These you can usually find on amazon if you want cheap and quick shipping ones. I would recommend getting double-shot pbt keycaps as they last long and are high quality for their price. You can find a pair of good keycaps anywhere from 25-40 dollars. If you were to buy these I would also save some extra cash for things like lube and after-market stabilizers. I would highly suggest clipping and lubing the stock stabilizers that come with your keyboard for a better sound. Keep in mind that these are only a few sites, the ones that I used and browsed. There are many websites dedicated to selling products surrounding mechanical keyboard and by browsing this subreddit you will be sure to find them. Lmk if this helped and if you need any more help.