1. never sell a gun. You will eventually regret it.
2. Don't make promises to your wife about limiting your life. If you don't have enough money to pursue your hobby then get more money. If that doesn't settle the dispute... well, I don't let my wife tell me what to do. You do what you think is best for you.
+1 on the above.
I will give you some unasked for advice, friend. When it comes to other kissing other women, do what your wife says. When it comes to remodeling the kitchen, do what your wife says. But when it comes to your personal hobbies and how you spend your own personal disposable income - you make your own decisions. As long as you're not leaving guns out on the coffee table, or getting gun stuff all over the living room carpet, or letting guns take you away from your family every evening and weekend - then WTH is her problem? Does it make one blind bit of difference how many guns you own, as long as you didn't deprive your family of needed funds in order to get them? How can a gun that is unloaded and locked up be a safety hazard? These are irrational lines of thought. You can either explain it to her the way it is, and tell her that within limits, you are going to do as you see fit in this area of your life - or you can resign yourself to a lifetime of marital despair - or you can end things now and get out before you have to worry about child support payments.
A midnight intruder is not, IMHO, the current greatest threat to your peace and prosperity. You need to think long and hard about the choices you have made in the past and the ones that lie before you now. You will never have a better chance to either nip a bad situation in the bud and save your marriage, or to realize you made a mistake and fix it now before you get in any deeper.
Sorry, not the question you asked, I know - but one I'll warrant you need answered more than the one you asked anyway IMHO. Good luck and God speed, friend.
Now, back on topic -
I have a Ruger P345 decocker. I like it a lot, it's a dependable workhorse. With W Ranger 230gr SXT .45ACP +P in the hopper I have a lot of confidence in it to make badness stop. I know, not a P95, but the same basic family and lineage. It is my nightstand gun, that's how much confidence I have in it.
ETA - it's easy to get some part time work to fund a hobby - heck, if times are really hard then sell some plasma or some other bodily fluid. Deliver papers, sell hot dogs at the stadium, do SOMETHING... money is not that hard to get for those who have a bit of determination. Don't go selling guns unless you absolutely cannot stand them, have no use for them. Unless you hate a gun, never sell one to fund a replacement - there's no surer way to learn the truth of that old "grass is greener" saying.