Yes, calling in an expert (for measurements and prof. advice) is a very good idea.
You might have dampened your room a little too much in combination with a listening chair/speaker positioning that enhances the bass too much and gives a muddy sound in the mids as result.
I too recommend you to start with a very near-field positioning to find out how you like that.
Haven't had the Totem One's but have had the Totem Sky's and they're certainly not muddy. Wouldn't use the One's below 80Hz.
Of course your room can handle bigger speakers. You just need to control them.