I wanted to maybe get a used engine with less miles on it if needed.
-Unless you can swap the engine yourself, it is not worth the cost of buying the engine and paying labor for it. Plus with a low mileage engine, your chasis will have alot of mileage causing other things to break or fall apart. Then you would have to spend more $ fixing it.

A body & paint job
-You car is almost 15 years old, unless you are going to showoff your car at shows or really want to have a clean paint job, theirs no point. Its bound to have imperfections plus your car is reaching the end of its life pretty soon.

Tints
-If you can get a tint done for a decent price then go ahead. I would personally not do it because its going to be a pitb to see at night.

Tire and wheel Package
-Wheels varies by your style and tires are always worth paying extra for.

Sorry for the long post, but if i were you i start saving up to buy a new car instead of trying to modify a car that can give out on you anyday. Sure Honda's can last but your bound to hit a costly repair that might not be worth it.