Thanks for the reply 1630Hopeful. And forgot to congratulate you on the 16'43 5k. Very impressive!
I did 10x400m this evening but it was quite windy... Supposed to do 12 but wind really took it out of me. Averaged 77s per 400m. This weekend the 1600m intervals should give me a better indication I guess of where I stand. I'll post my workout times. BTW thanks for the strava link. I'm now following you.