I would keep the two leases separate. They may end up in different spacing units. Now is a good time to try and get a better lease on the new 5 acres. Bonus amounts are much lower this year due to the difference in product prices from a few years ago. I am not fond of ratifying old leases.
Read your first lease. Are you getting paid for the option to renew? (The secondary term is something completely different. It is related to production). And I do not have options to renew in my leases. Too much can happen and they tie you up too long.
Yes, there are several attorneys listed in the Directory above.
If your second property had clear title and was open to be pooled at the first round of pooling, I would write them a certified return receipt letter and demand inclusion in the first pooling at the original terms. I have had success with that before if the error was on their part. Worth a try.