Tux fit

After many failed attempts buying an OTR tux for my wedding, I decided to go MTM. I just received my tux from Oliver Wicks. Overall, I really like the tux. The materials are fantastic and seems very well made. However, I want to make sure my money is well spent with a properly fitting suit. Oliver wicks offers $125 for alterations and a free complete remake if necessary. Off the bat I know I need to shorten the sleeves and I'd like to take in the midsection. It's slightly roomy as is. My main concern is the shoulders. It's the best fitting jacket I've tried thus far but l'd like to make sure I have everything right. Any advice is appreciated!