Standing (punching) Bag

Hi Everybody

I have been boxing for sometime now and have been using a hanging heavy bag. But now I want a little more of kickboxing, so I need a standing bag. But I cant find one here. My "Instructables mind" kicked in and I decided to make my own. I also though of adding a pull bar to it. As in the photo, The black line is the bag stand, and the red one shows the pull up bar. I decided the wall and stand to be 5 feet apart.

I may get something up but I thought of getting some professional advice before plunging in.
Initially, I planed on digging a hole(about a foot deep) and then using mortar to make a properly round hole so the pole could just slide in whenever I want to use(coz it cant be permanent). And for the pull up bar I could drill a hole in the stand and push the pipe through it and attach a threaded pipe flange to the wall.

Should I use pipe or wood. I prefer wood cause its easy to find. People around here have shifted to PVC, so I cant get the pipe from the general sanitary store next door. But I would somehow find it. I need functionality right now. Also if I use the pipe, would filling it up with concrete or mortar strengthen it???

So that's my idea. Any advice is welcome. I need something quick cause I plan to get it done the day after tomorrow.

Picture of Standing (punching) Bag