Very sorry about your fathers passing. It's never fun, but this sounds like an incredible adventure in his honor!

My advice - don't play the CC game. It's a liability and you have too much going for yourself. 10K and some fun exploration will do you well. Just my opinion. I may get flamed, but with excellent credit buying a house was a nightmare. I am personally opposed to cards "just" to have a card. I have 2 CC total to my name. One Visa and one AmEx for travel/work. I have zero plans to ever have more. Just my vote!