i've decided that i need a couple of part timers. i was thinking of one saturday girl/boy[!] already have a sunday boy - my eldest son

but if saturdays carry on the way they have i'll need someone in the next few weeks. my other sons are not interested - damn.
was also thinking about a part timer, my mum & mil have been helping out but to be honest they are both doing my head in in totally different ways.To preserve my sanity i was looking at perhaps one or two afternoons a week - with more hours available at peak times.
now this is were i need your input ppl, do i go for a floristry student? or maybe some one semi-retired? is a couple of afternoons realistic? can i have them work for a trial period? do you pay them minimum wage plus a bit? i was thinking of insisting on references too, & checking them, cos i'm like that, but my mil said i was being a bit OTT - moi! never!
anything else i should watch out for? i have made a point of not asking friends or their offspring, was thinking it would be tricky to get rid if i needed too!