As a general rule for estimating draw weight for your draw length with a recurve, divide the marked draw weight by 20 to get how many pounds per inch to add/subtract. A 60 lb bow will lose/gain about 3 lbs per each inch over 28. A 40 lb bow will lose/gain about 2 lbs per inch.

So, assuming you'll draw 30", you'll be pulling it about 44 lbs. 46 lbs if you do the full 31". Point of interest, 45 lbs was far and away the most popular weight for a deer bow in the 60's.

At 40 lbs the bow is legal for hunting in Texas. You'll have to check in your state. Get close with a good, sharp cut on contact broadhead and put the arrow in the right spot.