I am trying to order a pair of Mitas E-09 for the XTR for an extended trip to Morocco and my research with Openeo has uncovered the following options (price includes delivery):

Front
Mitas E-09 90/90-21 54 T Front TT M/C � 40
Mitas E-09 90/90-21 54 T Front TT M/C Dakar � 41 (�55 Trellesport + delivery)

Rear
Mitas E-09 130/80-17 65 T Rear TT M/C � 46
Mitas E-09 130/80-17 65 T Rear TL M/C Dakar � 51 (�69 Trellesport + delivery)

From my reading, I think the Dakar option would suit me better (longer life etc) but I note that Openeo rear Dakar option is Tubeless. I realise that fitting a tube inside is an option, however, are there are any other downsides that I should consider with buying a tubeless tyre? Such as�. Will I be able to break the bead? These are reportedly stiff, will I be able to fix on the trail? etc.

My goal is to get around 6,000 mile out of these and I am normally not too harsh on tyres. That said, this is the first trip with the XTR.

I have listed the same tyres at Trellesport but the website does not mention whether they are TT or TL type tyres. Mitas website confirms that they make the 130/80-17 in both TT and TL variants.

Any advice is appreciated.

Cheers,
Dale