very newbie questions

Ground up build despite I bought the tank

I picked up a super cheap 150 gallon tank (24x48x30) which will need resealed.

Because of costs I will restrict this to a freshwater build. (I'm not really looking to spend $20+ for each fish)

I am asking for recommendations on the following items:

A good "how to" video on resealing the tank.

If this was your build, what filters/equipment would you buy? (I'm looking for easy to deal with and reliable- recommended vendors for the equipment would also be appreciated)

Since this tank is mainly for my daughter (and myself), I am looking for unique and brightly colored animals for the tank. What would you recommend?

I know this gets asked over and over but I do appreciate your input.

The person I bought it from claimed it leaked and was used for fish prior to leaking.

so any advice on filter?

I'm thinking a center drilled bulkhead leading to a eheim 2217 for $140 from thatpetplace. Or should I do dual bulkheads (one at each end) and create a flow/current?

But what heater is recommended?
Do I need other pumps?( water or air?)
I have an old tube style light I can use but I would like to upgrade to L.E.D. lighting in the future. Which one to buy? Which ones to avoid?