Alright, here's the idea:
Starting Monday, I have exactly 24 weeks until my next key race (Moray Half Marathon, September the 5th). After a little bit of research, I've convinced myself that it's worth giving Base Training a tryout.
I'm planning on setting aside 12 weeks for this base phase, building up from about 45 miles next week up to about 65 miles by the time I'm finished (currently, I average about 50 mpw). Once that phase is over, I'd add tougher sessions like tempo runs and intervals, while decreasing mileage to compensate for increased training stress.
Once the race is 2 weeks away, I'll cut back on mileage, and hopefully smash the 1:30 target I've set myself (current PB of 1:33:45). 4 weeks after that is the Scottish Kilomathon, so I'd try and keep myself in race shape until then, then really cut back on mileage for a while before starting to base train beginning November for next year (and a hopeful first marathon).
What do you think? Is this a good idea, or am I being too ambitious?