how are these pieces of equipment: XT120 TRIMMER XT140SELE STICK EDGER BH25LE HANDHELD BLOWER JS25 WALKBEHIND MOWER the blower is rated at 145mph. is that good enough for just blowing grass off of cement? mower is preset at 3350rpm. is this good enough? has anyone experienced the MOWMENTUM feature of the mower?