Some of our guys can give you more info on those receivers.
For regular FTA service, I'm pretty sure they'll be fine.
If one is better for running a motor (should you eventually want one) than the other, you'll have plenty of time to find out.
Here are
some lists showing what's available on real FTA.
You can search the first list by language, so if you're looking for foreign language support, it's there.
The other lists are more technical, and you'll eventually want to transition over to them.
If some of your friends would prefer Christian programming, there are two satellites carrying quite a bit.
They are close together in the sky, and there's a kit with two LNBs to get just those.
(Other programming is also available on those birds)
See the GloryStar section of this forum for more info, or we can help you here.
For a temporary mobile site, you can certainly throw up a fixed-aimed 36" dish.
I say 36" because it's bigger, not much more expensive to buy, without going over the size restrictions of the shippers, and costing extra to get it to you.
Since you already have receivers to experiment with, you can get your feet wet (no Florida pun intended) immediately.
Pick a sat, try it for a few days or a week.
Pick another. Keep a list of what you liked.
You might find that most of your viewing is confined to one bird.
If so, you're done.
If you find two or maybe three satellites quite close to each other which you like, you might put several LNBs on the one dish.
There are pictures and discussions in the forum detailing many exploits of the intrepid members.
If you have a more permanent location, and want access to a wide range of satellites, you might then consider a motor.
Once you are well familiarized with your receivers, they aren't too difficult to add.
Another consideration is that you have two receivers.
Will you be happy with both on the same satellite?
If you daisy-chain one receiver to the other, then both must be on the same satellite and polarity (vert or horiz)
If you want both to be more independent, then you'd want to get LNBs with two outputs.
Those can immediately hook to two receivers, or through switches, be connected to 4..8..or more receivers.
I'd start with one LNB, with a single output, to get started.
As you learn more, you'll decide where to go from there.
Welcome aboard.