Structural question, Viking tent

[SethL]

I hope it's okay to ask the question here.

I have a viking tent that is 2.5 m wide, 3 m long, and 2.15 m high.

Currently, I have two poles and a crossbar, but I can't set it up by myself, so I would like to make an A-frame tent, but I don't have space to store 2.5 - 3 m long pieces of boards.

The crossbar in the current tent is split in half with a 50 cm overlap and fastened together with two carriage bolts and wing nuts. I was thinking of doing the same with the two boards on the ground that come with an A-frame tent.

But, for the boards that stand slanted up to the ridge (marked with X on the tent with the fabric on), I don't want visible modern solutions.

My question is, if I instead use 75x45 mm beams, can I drill holes in them straight in from the sawn end and then have a dowel that I then insert into the corresponding part? (See my excellent drawing below where I try to explain what I mean.) Or will it collapse then? The tent fabric weighs about 7 kg when dry, maybe more. I can use threaded rod, rebar, or wood for the dowel, it won't be visible so it doesn't matter.

My tent will not have dragons or anything since my fabric lies on the outside and not on the inside of the frame like in the tent in the picture, so the entire frame will be inside, but the poles will still be visible.

In the 'worst' case, I can make it half and half and sew some kind of linen/wool tube to hide the screws, but I would rather avoid that if possible.