newbie needs help with seat install

[clinkster]

OK guys so I finally got some pics of my seat issue. I finally decided to modify the seat brackets to sit flat on floor boards. I will use the two outer existing holes with longer bolts and follow up with thick washers underneath with an additional nylon nut. On the inside I will drill hole through floorboards and follow with same thick washer and nylon lock nuts as well. I will use all grade 8 hardware as well. if you guys see anything further needed please let me know. thanks