clarification on certain matters

asalaam alaikam what is the ruling on following another madhaabs ruling do we need to adopt the ruling and all that comes with it? e.g. if you wanna pray salah like a shafi do you need to do all the salah how a shafi does it im curious as i know talfiq is haraam but is all of it haraam or does it depend on the situation and circumstances?

second question in hanafi fiqh i read prawns are differed about some say haraam some say halal others say stay away from it if we have ikhtilaaf amongst the ulama in our madhaab who do we follow or can we follow any opinion as long as its in the same madhaab??? as this is something that has confused me.

third question if i travel and its asr time but the people follow the shafi view but I follow hanafi view is it ok to pray asr with those who follow imam shafis view or should i delay it till its two shadow length?

last question I got a friend who suffers badly from masturbation and well he is worried about things for example when he masturbates he stops but madhi comes out sticky fluid and it didnt gush out it just comes out due to excitement but it didnt spurt or gush out so if madhi is emitted as we know wudu is required plus istinjaa is this the case with one who masturbates but no semen comes out only madhi? he examined the fluid and it was sticky he is confused as he has not seen a specific ruling on this case if you masturbate but dont ejaculate and sticky fluid comes out