Retirement tax questions

@Anonymous_ 

 

Based on 429, I am a trader. I read that before, it only says, to report expenses on Sch C. Nothing about offsetting Sch D gains down or using form 8829?

 

Can I list all of expenses (even non home office ones) on 8829? or should I keep expenses separate. 

 

I don't want to start an argument here, do you think cboizauer method is wrong?

 

IRS will raise red flags if I show loss yearly  Source  (Read under Practical standard for business classification)

 

If i use simplified method, (5 x 300 sq ft) $1,500. then 8829 won't be used? so, where would i enter Sch D gain