Cheers ukd. I've worked out that I can visit your base 3 times a day (morning, afternoon and night) without issues so your soldiers and XP will be getting a good boost whenever I can get there. Be sure to keep your truck storage empty.
I'm halfway towards rank 10 now and hoping that the enemy aircraft will be unlocked by then.
Mrs bought me £35 for my PSN wallet. I may spend a few quid on FUBAR to boost things a little.