I don't know what you mean by "Ideas", but your wall TV outlet where you connect the coax will give you cable television or OTA (over the air) reception. For OTA reception you need to first raise the roof antenna (some new ones do not raise). The outlet will have a little push button on it which is for the antenna amplifier. A light should come on when you push the switch. Then you need to program your TV to receive the OTA signal and do a channel search. You will need to have an idea of the direction the signals will come from so you can turn the antenna (if it one that raises) to the direction of the signal. Without the amplifier turned on you won't get OTA signal reception.
If you are hooked up to cable then keep the amplifier turned off and once again program your TV for cable reception and again do a channel search.
If your TT is set up for satellite you will most likely have a separate outlet for satellite antenna operation.
One last thing, if you have a antenna that raises up DO NOT forget to lower it before you travel. Hang you ignition keys on the handle to remind you to do that. If you forget to lower the antenna you will always remember to lower it from that time forward (after you replace the antenna).
Without an outside speaker(s) you will only have 2 choices for speakers (A&B).
It seems many people have problems with seals leaking on slides. Then again you rarely hear from anyone that isn't having a leak problem, only those that do. Until you have the problem there isn't much to say about it. Many reasons or seals not working properly. My only suggestion is that is during heavy rain storms bring the slide in unless you have a slide awning installed. No need to invite trouble. Don't let water pool on top of the slide so a little slope on the trailer will help solve that, only has to be slight.
2014 Palomino Puma 25RS
2011 F-150 Super Crew XLT
Days camped in 2014 - 23
Camped 2015 - 47
Camped 2016 - 51 done - 6 more planned so far