For the TV, VillagerAV (Tom) is the person for installation, but he's not the guy to buy your TV and your stand from. He could set it up or do whatever you need after you have the equipment.
I would look at three places, Best Buy, Sam's Club or Bob's TV in Summerfield. Bob's specializes in big screen home install and you can find many good reviews on this site, they would provide the products and install them. Here's their website.
Home Automation Installer Ocala, FL: (352) 245-2183
If you decide to buy your TV from Best Buy or Sam's, which is what I did and then I searched for a cabinet for 75" TV, which is the size of my TV. I found this cabinet on Walmart's website for $300 with free shipping, also check Wayfair for cabinets.
https://www.walmart.com/search/?cat_...uery=tv+stands
TV Stands & Entertainment Centers | Up to 55% Off Through 01/19 | Wayfair
With appliances and washer & dryer you can search and find many opinions about the brands and the stores. I bought all new appliances in 2017. I opened a browser with Amazon, Best Buy, Lowe's and Home Depot sites and did about 10 hours of research. I came to the conclusion that the washer & dryer with the fewest complaints was a top loading LG washer, the model was 5.2 cubic feet stainless steel drum with no agitator and a top glass door. I Also bought the matching dryer with a glass door and can open the door from the side or from the top of the door, makes it very handy.
I did the same with appliances and came up with LG appliances, refrigerator, stove, microwave hood and dishwasher.
Then reading reviews of the stores, I found Lowes will deliver from the store of purchase, which means a much smaller inventory to choose from. Best Buy delivers from a central warehouse near Orlando and have most of the appliances on their website in stock. Between the four stores I went with Best Buy. My neighbor bought a lot of appliances from them and they negotiated much like a car dealer.
At Best Buy I found was best to ask for an assistant manager. I also bought my 75" TV a couple of months later and asked for the same assist manager and he gave me a deal on the TV.
On the appliances he matched Lowe's 10% veteran discount even when the appliance was already cheaper than Lowes and gave me additional discounts for buying a group and he threw in a $100 store credit card and sent me a free Google Home Smart speaker.
The appliances have changed since 2017 when I made my purchase and you may need a bigger refrigerator, my stove is electric and you need gas, but just to give you an idea this is how the LG appliances look in my small 10 x 10 CYV kitchen.