If it's money for adult birds that is an issue, one must ask if you have the money to build proper aviaries for each species.
Another thing to think about. If you do find eggs, you'll need extra aviaries for the extra males. Keeping each species hatch together till mid to late winter will be no big issue. But come breeding season, if you have more than one male in the aviary, all hell will break out, and you'll end up with dead birds.
Some species cannot be kept together, right from hatching. Like Reeves. They will kill other species of chicks.
Another point of interest. The Reeves males are well known for being the most pugnacious of all the species. This is towards the keeper.
Ask yourself: do I have the right temperment to allow a bird this aggressive use his spurs on my legs, and not kick the bird off ?
Most male Reeves are like junk yard dogs. I know few people that have the right temperment to handle them...
When building aviaries for them, also consider that you'll have to keep each aviary apart form the other, or use a sight barrier between each species, to keep them from fighting through the wire.
Minimum aviary sizes.
Reeves: 200 sq. ft.
Elliot's: 200 sq. ft.
etc.
Bigger, is always better. Especially for any long tail species.
So, planning the aviaries would be your first step. Get them built and the landscaping well established the first year. Get birds the following year.
If you buy adult birds, you will not have to build as many aviaries to house all that you hatch.
