There's 53 minutes between the 2 stages. Usually on a WRC gravel event like this one there will be 3 or 4 minutes between WRC cars. So after seeing only the 10 works WRC cars 30 or 40 minutes have already passed. Leaving either 23 or 13 minutes to move from one stage to the other. Walk to the car, drive (short drive, it's true), and walk again... I'm not saying it's impossible, but it largely depends on the number of spectators (how far you have to park on both stages), the gap between WRC-cars and the drive-ability of the road in between. I think I'd stick with choosing some good spots for SS2 and 4. Better to find some great spot for 2 stages than have 3 stages with "average" action you already forgot after a few days.