Hi there, hope this is of some help.
I worked for a short haul airline for 2 years and really enjoyed it. I was away a few nights a month and sometimes up to 5 nights in a week. However, there were months where I had none at all. I then moved on to a long haul airline, where I was away up to 5 nights, however rare. I usually had 1 or 2 nighters that spread over 3-5 days. I will say that I enjoyed short haul a lot more than long haul. I think it will be worth it but it depends on the airline. I worked for bmi and found them to be great, good money but some very long days. However, it paid off when you got your 2-3 days off. You may, for example, have 4-5 days working and 2, sometimes 3 off. 6 days working and always 3 off.
Going on preference, mine is short haul as I have more of a life, even though I may have to get up at 330am. I'm sure you will make the right decision. Just think, if you don't like it you can always change it!!
Good luck