Several advises - constantly change the time when commenting - sometimes make it 30 mins, sometimes 2 hours, sometimes 1 hour or so, since the pattern can be easily detected and IG will start checking accounts' activity in general.
100 accounts are A LOT and mobile proxies would be too expensive in this case. Would highly suggest investing in residential proxies and go with those. Don't know how much money you can allow to this but you will need good proxy services to work on Jarvee and these are pretty expensive, like Iuminati, smartproxy, netnut. Nevertheless, if you're working with social marketing on IG and want to reach high results fast, this investment in proxies must be considered.