The plan is nice, but I would rather see something like this get realised:
1. SpaceX (for example) fulfil their reusable Falcon Heavy plans.
2. Reusable Falcon Heavy cuts the price to Mars per kilo by an order of magnitude or two.
3. 10-15 unmanned flights launch the inflatable pieces to a ground station (preferably robotic and builds itself automatically)
4. 5 manned flights (like the ones in the OP) crew it up with a larger research team.
5. If budget allows it, rotate crew with a couple annual flights and make the ground station permanent.
It would be better if whoever goes to Mars, waits a little bit to achieve more than just setting our foot there.