Fixed payments for first 12 weeks then tapered payments after that ie means tested .
Since last November self-employed are entitled to 6 Months Benefit (regular Unemployment Benefit) so means test will not kick in until then
True but you are not allowed to work on a self-employed basis at all during such a claim so presumably you will have to surrender your SPSV licences. Also, the rate is reduced if your income was below c.€300/week for 2018.
Jobseekers Allowance, on the other hand, is means tested but allows you drive your cab as much as you want so doesn't require you to surrender licences.