Nicely done.
75# no prob to take off a tad, much better than being under.
It's good to have a go with some heavier weight, gives you an idea what is best for you.
Your first is always special, but the second will be even better.
Those few extra pounds will give you a bit to play with when you look back on it a few months down the line and decide to re-work it a bit to tune it up.
You have to live with a bow for a bit before you can tune it up and really call it finished, sometimes a tiny bit of work can make a big difference to how it shoots.
Good to have you on board.
Del
(As you are a new guy, you probably havn't seen my website or bowyers diary. Google 'delsbows' to find me...)