  Taking into account the recently proposed poly-instanton corrections to the
superpotential and combining the race-track with a KKLT respectively LARGE
Volume Scenario in an intricate manner, we show that we gain exponential
control over the parameters in an effective superpotential. This allows us to
dynamically stabilise moduli such that a conventional MSSM scenario with the
string scale lowered to the GUT scale is realised. Depending on the cycles
wrapped by the MSSM branes, two different scenarios for the hierarchy of soft
masses arise. The first one is a supergravity mediated model with M_3/2=1TeV
while the second one features mixed anomaly-supergravity mediation with
M_3/2=10^10GeV and split supersymmetry. We also comment on dynamically lowering
the scales such that the tree-level cosmological constant is of the order
\Lambda=(10^-3eV)^4.
