10k training - how fast can i get in 5 months?

[sirchimp]

That 21.6k did a number on me...in the form of blisters and other joyous pains. Minor though...

Did an easy 6k and then easy 10k today:

Tread Mill - 1%
km | time | avg HR | max HR
1 | 6:06.8 | 108 | 122
2 | 4:54.8 | 130 | 134
3,4,5 | 14:41.5 | 135 | 141
6 | 4:58.2 | 141 | 144
Total: 30:41.3
130/144 AHR/MHR
(some reason i missed hitting the lap button on 4+5)

Tread Mill - 1%
km | time | avg HR | max HR
1 | 6:03.2 | 109 | 124
2 | 5:00.6 | 127 | 130
3 | 4:59.9 | 130 | 132
4 | 4:59.8 | 134 | 138
5 | 4:59.9 | 136 | 139
6 | 4:59.7 | 139 | 141
7 | 5:00.0 | 139 | 142
8 | 5:04.9 | 141 | 142
9 | 5:12.9 | 141 | 144
10| 5:16.0 | 141 | 143
Total: 51:36.9
133/144 AHR/MHR

Again...further improvement on HR:pace ratio...

Tomorrow I'm going to head to the track for the 6x1k session. I'm planning to start at 3:45/km. Sound reasonable?