I chose to expirement and try luck with trading and freelancing, if there is no success with any for september, I will choose full-time job.
This span you have chosen is very small to see whether he can succeed or not because Trading needs time and attention you need to read learn and analyse and keep reading markets.
Can I learn and do trading for month to make at least some money(around $100-$250), while doing freelance programming? I can arrange 3-5 hours for each activity per day
This is very hard to predict as it completely depends on your skills and efforts.