First of all remember this is your money, you worked for it, and it's for you & only you to decide how to spend it. Don't let anyone pressure or guilt you into spending it in any way other than how you wish.
Long answer coming---
That said, there are a number of good reasons to shop with the LDS. One is that you want him to remain in business so he'll be there when you need him, if only for convenience. Also you should recognize that the LDS offers many intangibles, such as advice, the ability to compare gear in the flesh, the opportunity to try items on for fit, and often is the focus of local dive activity. Unlike other professionals such as Doctors & Lawyers, the LDS cannot bill his time or charge for the education he offers. You pay the LDS for these only when you actually buy something there, so it's only fair that you make an effort to purchase locally. (I work in another industry with similar local shop vs. mail order issues & have to deal with this daily)
However, the concept of support a LDS in general doesn't automatically translate to supporting a particular shop. Any LDS must earn your loyalty, & be respectful of your needs, preferences, & budget limitations. As a new diver you don't need to buy only top of the line equipment, or every bell & whistle offered. There are many choices of perfectly functional equipment at a full range price points. Take some time to review what is out there at what price ranges, then get some help setting priorities as to which features are most important to you, what they cost, & what is your overall budget. Do not overspend at the front end, since you'll encounter many other forgotten expences, & still will need cash leftover for actual diving.
Looking it your list, I see many opportunities to cut back, such as you don't need a $1,000 computer, & could easily buy a great non-airintegrated model for under $500.
Likewise wetsuits, I consider these consumable, as they wear, & compress over time, so they're not necessarly where I'd spend extra bucks.
I could go on, but I'm sure you get the point. Establish a reasonable budget, pick only the features you need most, and offer this shop the opportunity to make a sale within those constraints, or otherwise shop elsewhere.
Lastly do not buy into the argument of buying top end first rather than upgrading later. If you buy reasonably good quality equipment & later become an avid diver, you won't mind upgrading over time. However if you purchase all top of the line equipment up front & later don't become an avid diver, (yes, many folks give up this great sport
after only a few dives) you'll be sitting on some expensive paperweights.
Sorry for the long answer, but I wanted to offer some perspective, don f.
