$100 for that ay?! I might need to check one out!
when I've looked at the Harbor Freight model it seemed with a lot of use it may get a bit wobbly. If it were me I would secure a piece of ply-wood across the top and see about bracing the legs too. A solid core door sounds really good if you have the tools, place and ability to trim it down to fit and put legs on it. Or...
https://www.amazon.com/Shop-Fox-D2910-Workbench-System/dp/B0000DD362 If that is something within you price range.
I do my reloading in the small bedroom of the house. 10' X 11'. I found an old 2-person school desk with a 1 1/2" plywood top at a liquidators in PDX. If you ever get in here it's called "City Liquidators". They have huge 100 YO 4 story building FILLED with stuff, newish and old. I paid $14.00 for it.
IKEA has those arm lamps for $10.00 compared to Freddy's for twice that.