Hi Alexander! As a generalization, most properties in the 10K-20K range are either in bad areas or will need a substantial amount of rehab, making them poor investment choices in my opinion. As you go up from there, in the 20K-45K range, you'll start to be able to find homes in non-warzone areas. Some of these homes won't need a ton of rehab - which are the ones I suggest you go after. They also will cashflow nicely, with rents typically found in the $650-$850 range depending on the exact area. Obviously, the closer you get to the 45K price, you'll want the home to be in move-in condition.
Since you're buying cash, you're best to go for the BRRRR strategy. Offer low cash offers. Get a good deal so your all-in cost does not exceed 75% of the ARV value so you can refi out your cash and rinse and repeat. We invest mostly east of the city, so these numbers are based on what we experience in that area.
With 150K, you should be able to pick up 4 homes - possibly 5 which includes closing costs, rehab, etc. Hope this helps!