I will be on vacation in London at the end of this month. I arrive to
Heathrow airport and stay in Bayswater inn hotel. Let's just say that $100
price for the taxi trip seems to be somewhat excessive for this New York
resident

. So I figured I can take a tube.
http://journeyplanner.tfl.gov.uk suggested this route (I selected tube only
with least transfers):
=======================
10:00
10:06Heathrow Terminal 2
Walk to Heathrow Terminals 1-2-3
Transfer time:6mins
10:06
10:39Heathrow Terminals 1-2-3 Underground Station
Take the Piccadilly Line towards Arnos Grove
or Piccadilly Line towards Cockfosters
10:45
Earl's Court Underground Station
Take the District Line towards Edgware Road (Circle Line)
Average journey time: 8 mins
10:53Bayswater Underground Station
=======================================
Is this route doable with one large bag on wheels and small backpack? I've
never been to London and don't know how crowded London Tube is. Am I correct
to understand that tube trains run on pre-determined schedule (seems like a
foreign concep to me

)?
TIA