No idea on the loan. As far as looking over the property, yes 100% see it with whoever you need to look with you. Don’t trust anyone telling you to make offers without seeing it.
The second thing is to double/triple/quadruple check the contract you are signing. Not just the assignment one, the original P&S document that you are taking their position in.
The last wholesale deal I bought took 3-4 attempts for the wholesaler/their attorney to send a correct contract. They continued to send over contracts where the math was simply incorrect and had me overpaying. Luckily I’ve seen enough contracts to not sign until it was correct.
Another thing I’ve seen is wholesalers requiring you to use “their” title company. The reason is the title search/insurance is ready to go. On that same deal above the title company charged 3-4 times the standard rate (thousands of dollars when I’m used to spending hundreds). They also had something like 30 pages of exclusions... they were actually a good title company from what my attorney said, but again it took us reviewing multiple times for them to get things correct. I still paid a “rip off” amount of money to their company. From now on, I’m not sure I would agree to use a wholesalers title company again.