Scotland in September / October: What lenses?

Greetings everybody!

I will go on a 3 week roadtrip with friends to scotland in late september / early october and I'm currently unsure what lenses to bring.

I own a S5II. My current plan would be to have my Sigma 28-70 2.8 on 99% of the time, bring a 85mm 1.8 in case of a little portrait shoot and call it a day.

My main two questions are:

- is ultrawide needed in scotland (e.g. S Pro 16-35, Sigma 16-28, S 14-18) or do you think 28 is wide enough?

- Do you think the 28-70 is long enough (e.g. when using hybrid zoom) or is a tele for some stuff necessary?

Currently I don't own an ultrawide or tele, so I would need to buy / rent one, however this shouldn't be a big deal.

Thanks! :)