I was with my now wife for almost five years prior to enlisting. We got married prior to enlisting. It's not for everyone, but I'll give you the same words I give to everyone who thinks about getting married in the Navy.
Can you trust her with money?
Can you trust her not to slut her way around the neighborhood?
Can you trust her to support you and not be stupid?
If the answers to those questions are anything other than yes, think long and hard.
Lets talk about money. I joined up and went to A school and chose to live in base housing. We got a windfall during boot of 5k$ from a recently deceased relative. I specifically told her to NOT work for a variety of reasons. We ended up even at the end of our time in SC. I'm still an E-4 (but I will be frocked to E-5 if I can lose some weight), now she's working, and we pull about 2k$/mo while living out in town. If I get thin and paid E-5 I'll up that by 500$/mo. However the Navy will NOT give you extra money just because she has a kid. That said, if you live within your means and are good with money, you will do perfectly fine. Compare this to another individual I know whose wife liked to sit around doing nothing all day long but eat and watch disney channel and then proceeded to help rack up 20k in debt. They did NOT do well financially. She later got pregnant and he ended up going crazy in prototype saying he hated his life and the first time he got into the plant started spinning valves freely (on his indoc tour). Would actually like to know what happened to him since I went to A school with him.
In any event we actually liked base housing in South Carolina, you aren't going to get much better out in town and your commute will be worse. Also if your SLPO is a dick he won't let you drive during phase 1, and that will really make life painful for you. Then again I heard that they privatized base housing, which could mean you're going to be screwed there because some old retired O-6 wants to rape and pillage the blue shirts to fund his retirement.
Sluts... Once you deploy you're going to be gone for at least six months, you have to be able to trust her while you are gone, or not care that she's sleeping around. I've heard plenty of horror stories of nuke love gone awry and people getting home to see their wife getting it on with another guy on the couch.
Support and non-stupidity. Girl I know who I went to Indoc with was kicked out of base housing because her husband did drugs and was caught. I think they also threatened to take her daughter away. My wife was more than willing to do everything it took to support me, including ironing my clothing and other things. It helped that she didn't work, but once you get to prototype you will not be home. I resent right now when my wife bitches about her long days when I'm at work 85 hours a week on average. If she's not supportive and understanding about the ammount of stress you are under, that will become a problem. If she's prone to do stupid shit that will get YOU in trouble, that's also a problem.