just some comments:
LGW has a minimum connecting time of 90 minutes (see airport page)
try to coordinate your hubwave in the following way:
start with some local feeder:
before 07:30LT: arrival from UK and Ireland (nightstop)
after 09:00LT: depature towards short european destinations (less than 3:00h turnaround time )
before 12:00LT: arrival from european destinations
after 13:30LT: depature to UK and Ireland
before 16:30LT: arrival from UK and Ireland
after 18:00LT: depature to short european destinations
before 21:00LT: arrival from europe
after 22:00LT: depature to UK and Ireland
these are eight daily short flights per aircraft as a CRJ, an A320 or a B737
you could fly for example
SNN-LGW-AMS-LGW-SNN-LGW-???-LGW-SNN
DUB-LGW-CDG-LGW-DUB-LGW-???-LGW-DUB
MAN-LGW-FRA-LGW-MAN-LGW-???-LGW-MAN
GLA-LGW-BRU-LGW-GLA-LGW-???-LGW-GLA
if this is running, you could add your first widebody:
07:30LT: arrival from JFK (4 times weekly)
09:00LT: depature towards DEL,(maintance is done there) (3 times weekly)
12:00LT: arrival from DEL
13:30LT: depature to JFK,
if the business is running well, you could add some more narrowbodies for some more european destinations, expand the freqency and add additional destinations