Train transit time to Ashikaga Flower Park

Hi, I plan to use trains as per link below for half day trip to Ashikaga Flower Park.
I note that some of the transit time between the arrival of the first train and the departure of the next connecting train is barely 5 minutes.
So do I have sufficient time to buy train tickets within the 5-minute transit time and catch the next train ?
If not, what else can be done ?
Appreciate some quidance . thank you

http://www.hyperdia.com/cgi/en/search.html?dep_node=IKEBUKURO&arv_node...


http://www.hyperdia.com/cgi/en/search.html?dep_node=TOMITA&arv_node=AS...

Buy Suica or PASMO card just touch ticket gate.

not need by vending machine at each transfer stations.

If Hyperdia lists a connection, it means that travelers can make the transfer (unless maybe if it is a very slow traveler or a traveler who gets lost in the station). Omiya and Oyama Stations are difficult to get lost in because all the tracks are parallel to each other, though, and the amount of time seems sufficient.

Thank you for the info. Can Suica Pass be used in Tobu train line from Asakusa to Tochigi, Oyama, Sano area ?

Yes, Suica and Pasmo can be used on all Tobu trains.