I plugged this in as best I could into BlindValet.com and, turning off and on antes, it did not change the structure. It added 25T antes at the third level. Blind Valet had that level at 75/150.
So I suppose you could keep it as is, add the antes, and see what happens. If it seems to end too early, try adding the antes without raising the blinds for that level.
As a side note, Blind Valet used to export structures to the clipboard in various formats. I miss that feature. Here's the best I can do using the CODE code:
Code:
Blind Structure
TIME SB BB ANTE
1 20 min 25 50 -
2 20 min 50 100 -
3 20 min 75 150 25
4 20 min 100 200 25
5 20 min 150 300 25
6 20 min 200 400 50
7 20 min 300 600 75
8 20 min 500 1000 100
9 20 min 800 1600 200
10 20 min 1200 2400 300
11 20 min 2000 4000 500
12 20 min 3000 6000 500
13 20 min 5000 10000 1500
14 20 min 8000 16000 2000
15 20 min 12000 24000 3000
16 20 min 20000 40000 5000