my advice will be swat , for transport u can use taxi there , and if budget doesnt allow then hi ace is also an option , hotels are also cheap there , ull easily get a room between 600 - 1000 . suggested plan would be :
day 1 : multan to ISB
day 2 : ISB to mingora , then mingora to madyan
day 3 : madyan to kalam , explore kalam
day 4 : day trip to mahodand lake and back to kalam and then bahrain
day 5 : visit malam jabba , swat museum and marghuzar white palace and return to ISB by midnight
day 6 : return journey to multan
cheers