I will not build you a deck. I will only give you pointers on how to make a good deck.
First, decide which Pokemon you want the deck to revolve around. If you want a standard Haymaker, find some Basics with 70 HP or higher, or run Sneasel. Now, find some backup for your main attacker, usually Cleffa and Tyrogue will be enough for that. We'll come back to this later.
Second, find a trainer set that you like and will use often. Your trainer set should include the best cards from each of the following catagories...
Card Drawing (Oak)
Searching (Computer Search)
Healing (Gold Berry, Focus Band)
Card Recovery (Town Volunteers, Item Finder)
Board Disruption (GOW, ER, SER)
Hand Disruption (RSA, Lass)
Gymbreaker (optional, a standard one is Sprout Tower)
Once you've got those figured out, balance your trainers according to importance. I believe that the order that I've listed above is generally accepted as best.
Now that you have your Pokemon and Trainers set, time for your energies. I usually count up the number of colored energies that each of my main attackers use, add 1, and use that as my Basic NRG count. If you are using Darkness, Metal, or Colorless, then max out on the specific energy type that you are using (Darkness, Metal, DCE)
By now, you have a deck that is well over 60 cards. Go back and trim out some of your Pokemon, using no more than about 3 of each type, and 2 for each of the Babies. Also, take out some of the trainers that you don't think will be worth your time in terms of their abilities. Finally, if you run out of things to trim from Pokemon and Trainers, take out some Basic Energy (never remove Specials if you are running a Special deck) until you have 60 cards, but always have at least 10 energy cards and at least 8 or 9 Basic Pokemon (which is the basic definition of the InSaNiTy deck). Work with that and repost as soon as you can put together a deck. gl, hf.