I guess you are looking at used trailers, any particular brand? "Hydraulic jack", you got to have the hydraulic landing gear jack!! But that's alot of money in itself, and you have a limit on what you can spend so you will have to weigh what options you can or cannot live without. You already have past that $30,000.00 limit with what you have listed, good luck with your search, it can be exciting as well as frustrating!!......Pass the Valium please!!

 As of this moment, there are 1465 4H/LQ trailers listed on HTW, 103 of them are prices between $25,000.00 and $30,000.00, that should keep you occupied for a few hours!!!    Here's something you may can use. 

http://www.horsetrailerworld.com/home/trailerdetail.asp?ID=137202

With almost 1500 used trailers in your price range, you should have a chance to purchase one with most of the options you will want. Most full sized LQs have a full bath, with a shower and toilet, our most important consideration when we bought a trailer. A sofa/bed versus a dinette is a toss up and enjoyed by both owners. A trip to a dealer with your family in tow might help decide which would be more practical. I wanted a dinette, the boss wanted a sofa. We got the sofa and like it a lot.

A cook top is handy when you don't have an electrical hookup available for a microwave. An oven for us is unnecessary. The hot water heater, air conditioner and refig are all pretty much standard on most LQs, and are needed and wanted.

Mangers are debatable with both camps touting which is best, yea or nay. They afford extra storage but at a price of a smaller stall area. I've never needed or wanted a generator, hated those running late into the night. An escape door on the front stall is an option to shoot for, even if the stall is only used for storage.

Ramps vs step up loading is always debatable as to which is best. An insulated stall area is a plus, loading lights, drop down windows on the butt side, butt bars instead of chains, 60 -40 rear doors, moveable rear tack are all items you may want. A 7 1/2' high trailer is more comfortable for larger horses than a 7' model

I prefer an all aluminum over a steel/aluminum trailer. In the north east a steel frame has rust issues. We recently sold our last steel trailer. For a family of four, an LQ of 10' would be a minimum, 12' better. A mid tack is a great space to have and we are able to store many of the things that would end up in the LQ area. Most campers have an audio system installed.

A boom box or portable DVD player is easily added, or for a more permanent installation, a used automotive radio/cd player can be purchased for a fraction of the cost of an RV radio. They are powerful, compact in size and very reliable.

Go to some shows and talk with some owners about their likes and dislikes. Combine that with your shopping experience and you should get a pretty good idea what you'll need. As an aside; its easier to put up with an appliance you don't need, than have one you want and don't have. Buy a fully equipped LQ and you should be set.

BOL  Gard

The 1/2 foot in height also translates into more head room in the sleeping area above the GN.  This was a must for me ... Sitting up and getting a bump on the head makes me grumpy all day.